Cello Geltech Fun Glitter - Blue Gel Pen . This pen writes like a dream and color is vivid. At this price, Cello is providing quality glitter pen that would not burn a hole in your pocket. Cello blue pen writes bold and have a soft tip which makes writing fun. It takes less time to dry, it is transparent with sparkles, solid plastic with satin finish matching ink colors. This pen has 1mm nickel silver plating. Glitter Gel Pens from Cello comes with German Zero Smudge ink.this product is Very good for children to do their craft designs.